... speed: 3 minutes to melt gold, electromagnetic, portable Electromagnetic Portable Gold Melting FurnaceFeatures:1 Mainly through the crucible ... gold, gold, silver, copper, iron and steel, gold powder, Sands, tin ash, dross contour molten gold metal3 The ... high voltage transformers, high security, eliminating the high-pressure.Working Principle:Frequency electromagnetic induction heating or referred ...